Urban rooftop gardens?

Urban roof garden greening is very important. Urbanization is becoming increasingly obvious, which is very critical to the surrounding living environment. Every detail is important. Zhongda Consulting would like to explain to you the greening of urban roof gardens.

With the rapid development of industrialization and urbanization today, the rapid expansion of cities has led to huge demand for land resources. The dry and hard concrete floors are swallowing up the few green spaces in large chunks, and the city is gradually turning into a forest of reinforced concrete. With the improvement of the quality of life, people have higher and higher requirements for the living environment. Returning to nature has become the deep desire of the human soul. How to solve the contradiction between the increasing shortage of building land and the increasingly higher quality requirements of human beings for the living environment. The emergence of roof gardens points us to a clear way. 1. Analysis of the history and current situation of roof gardens Roof gardens are not a product of the development of modern architecture. Its history can be traced back to the large temple tower built in Assyria, one of the oldest cities in Surme, 4,000 years ago. In its birthplace, in the early 1920s, the famous British archaeologist Sir Lund Woolley discovered traces of large trees planted on the three-story platform of the tower. The real roof garden was more than 1,500 years after the ancient Assyrian temple tower. The famous "Hanging Gardens" of Babylon were only developed in the 1960s. The reason why it is called "one of the seven wonders of the ancient world" is not just an achievement in gardening art, but a masterpiece of ancient civilization. After the 1960s, Western developed countries have successively built rooftop gardens of various sizes. At present, roof gardens have received more and more attention abroad. In Chicago, the local government is promoting a rooftop garden project to cool down the city in order to reduce the urban heat island effect. In Tokyo, Japan, the government clearly stipulates that if a new building covers an area of ??more than 1,000 square kilometers, 1/5 of the roof must be covered by green plants, otherwise the developer will have to accept fines. In recent decades, Germany and Japan have developed relatively complete roof greening technologies and are at the forefront of the world. my country only began to study roof garden technology in the 1960s. Due to the influence of technology, materials and other aspects, it is still in its infancy. Nationally speaking, roof gardens have only been developed and constructed in a few provinces, cities and regions in the south, and these are mostly made of the roof platforms of original buildings and renovated. There are only a few roof gardens that are actually built according to the plan. The first ones to adopt rooftop gardens were tourist hotels, such as Guangzhou Dongfang Hotel and Beijing Great Wall Hotel. With the acceleration of urbanization in our country, the phenomenon of insufficient green space in urban built-up areas has become increasingly obvious. Building rooftop gardens, increasing the green coverage of the city, and improving the urban ecological environment have attracted more and more attention. In recent years, in economically developed areas, roof gardens have developed rapidly. Some cities have used roofs as new green sources in the city, such as the roof garden of Guangzhou Dongfang Hotel, the roof garden of Guangzhou White Swan Hotel, the roof garden of Shanghai Huating Hotel, etc. 2. The significance and function of roof gardens 2.1 Ecological benefits The emergence of roof gardens has greatly improved the deteriorating living environment and also solved the problem of lack of urban green space. A building is a green space and a natural air conditioner. The large-area ecological roof can adjust the extreme temperatures of cold winter and hot summer, improve the local microclimate, effectively alleviate the urban heat island effect, and improve the local water cycle. At the same time, the roof garden also has the functions of purifying the air, blocking noise and dust, increasing oxygen, and improving people's quality of life. Systematic roof gardens can repay nature's effective ecological area, increase the "natural" spatial layer of the city, and provide new living places for wild animals and plants. Turning the roof into a roof garden not only beautifies the environment, but also saves the land for our future generations. 2.2 Economic Benefits Green roofs improve the extreme temperature differences between cold winter and hot summer, alleviate the damage caused by thermal expansion and contraction of the building, and extend the service life of the building. In the summer, the green roof can effectively reduce the indoor temperature, and in the winter, it acts like a warm protective cover to protect the building. Insulated in summer and kept warm in winter, roof gardens save energy to a great extent and alleviate the increasingly serious urban energy crisis. Rooftop gardens have a water storage function. A large amount of precipitation is stored by plants and returned to nature through transpiration. This can greatly reduce the pressure on the urban drainage system, save a lot of costs for drainage projects, and also reduce sewage.

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